Automatic stuff-box for paper-making machines.



FIG.1. Z0

M. JAKABy AUTOMATIC STUFF BOX FOR PAPER MAKING MACHINES. APPLICATIONFILED AuG.I3. 19H.

Patented Dec. 25, 1917i 2 SHEETS-SHEET l.

Flc-1.2. j

I 61H01 mm1 M. JAKAB.

AUTOMATIC STUFF BOX FUR PAPER MAKTNG MACHINES.

APPLICATION FILED AuG.I3. 1917.

1,251,381. Patented Dec. 25, 1917.

2 SHEETS-SHEET 2- :MIKE JAKAB, F WOODLAND, MAINE.

AUTOMATIC STUFF-BOX FOR PAPER-MAKI-NG MACHINES.

Specication of Letters Patent.

Patented Dec. 25, 1917.

Application led August 13, 1917. Serial No. 185,899.

To all whom z't may concern.'

Be it known that I, MIKE A KAB, a subject of the King off'Hungary,residing at Woodland, in the count of Washington land State'- thefollowing is a specification.

The primary object of my invention is they provision of an automaticallycontrolled de- `gice for stuft' boxes wherebya uniform iow .oftockisprovided without requirincr lthe attention of an attendant, the devicebeing easy to manufacture and install and calculated to save expense inoperating the plant. A further object of the invention is the provisionof a stuff box structure for paper making machines for automaticallyproviding a return to the chest of all surplus stock and therebyrelieving any excess pressure at the outlet from the stuff box to themixin box.

Vith these general objects in view and others that will appear as thenature of the invention is better understood, the saine consists in thenovel construction, combination and arrangement -of parts hereinaftermore fully described, illustrated in the accompanying drawings, andpointed out in the appended claims.

In the drawings forming a part of this application, and 1n which likedesignating characters refer to corresponding parts throughout theseveral views,

Figure 1 is a central vertical longitudinal sectional view through thedevice in its normal arrangement,

j' Fig. 2 is a front elevation of the device,

Fig. 3 is a transverse Avertical sectional view taken upon line III-IIIof Fig: 1,

Fig. 4 is a top plan view of the device,

Fig. 5 is a sectional view similar to Fig. 1 with the device in itsoperating arrangement,

Fig. 6 is a vertical transverse sectional view taken upon line VI--VI ofFig. 5,

Fig. 7 is a perspective view of the controlling slide and Fig. 8 is aperspective view of one of the partitions.

Referring more in detail to the drawings, a stuff box 10 is arran edwhich is adapted to communicate with t e usual mixing box, not shown,for the stock by means of a spout l1 arranged adjacent an outlet 12' inthe front Wall or end 13 of the stuiil box. A

Automatic Stuf- Y partition 14 is arranged within the box 10 extendingupwardly from the bottom to about one-half of the height of the boxwhile the outlet 12 is controlled by a/valve 15 pivoted to the forwardend gf )2f/rocking bar 16 pivoted to a yoke 17 spanning and mounted uponthe stuft' box 10. The valve 15 is guided by means of a plate 18 securedto the inner side of the front wall 13 while a sliding weight 19 isarranged upon a notched re u'ced rear end portion 20 of the rockinglever 16 for assisting in adjustably maintaining the valve 15 in itsoperative position.

A partition 2l is arranged transversely within the Stuff box 10rearwardly of the partition 14CA and terminating only slightly spacedbeneath the upper edges 22 of the longitudinal side walls 23 of the stu"box and is arranged with a central beveled top portion 24. A doorway isprovided in the. bottom of the partition 21 normally covered by means ofa slide 26 and adapted to be revtracted when desired by means of aheaded rod 27 projecting laterally of the box 10.

A controlling slide 28 is vertically shiftably arranged within the box10 in fiat contact with the rear partition 21 and is provided with anopening 29 registering with the beveled. portion 24 of tlpe partition21, a bail 30 being attached to the slide 28 and pivoted as at 31 to therocking lever 16. A

forward hinged cover member 32 and a rearward hinged cover member 33 isprovided for the box 10 having their inner edges substantially incontact with each other when the covers are closed. The forward cover 32rests upon the beveled upper edge 34 of the slide' 28 While a channelplate 35 is swingingly mounted within the opening 29 of the slide 28upon a rod 36 which passes through the bail 30 and through guide slots37 in the sides 23 of the box 10.

The locking plate 35 isA adapted to swing upwardly over the adjacentedge of the cover 32 while a resilient latch 38 is carried by the cover32 for springing over the plate 35 and retaining the saine in positionbut permitting the rocking movement at the point of contact between theslide 28 and the cover 32 when the slide is raised and lowered. Aslightly curved plate 39 is carried by the forward edge of the cover 33for overlying the latch 38 and the adjacent portion of the cover 32.

The stock is pumped into the stuff box 10 through the inlet pipe 40 intothe space bel tween the partitions 14 and 21 and when sufby means of theoutlet pipe 42 in the bottom ficient stock has been pumped into the boxto reach the top of the partition 14, the stock iows over the top ofsaid partition 14 to the outlet 12 and beneath the valve 15 to andthrough the spout 11. The weight 19 is set for permitting the desired,flow of stock vthrough the outlet'12 while in the event of pumpmg of anexcess of stock into the box 10, the stockV will engage the cover 32 ofthe box-thereby elevating the cover as Well as the slide 28 and bail30for tilting the lever 16 partially closingA the valve 15 and maintainingthe flow of stock constant through the outlet 12 regardless of theincreased pressure upon the stock. This elevating 'of the slide 28permits the surplus stock to iiovv wall or end 41 of the box 10 forreturning of the box to the stock chest 43 suitably arranged beneath thelevel thereof. The slide 26 may be manually opened by means of the rod27 when it becomes necessary to further relieve the pressure upon thestock within the box 10. Opposite guide strips 44 are provided for theslide 28 and it will be seen that with the covers 32 and 33 in theirnormal closed positions, the stock may readily elevate the cover 32,carryingthe cover 33 therewith as well as the slide 28 permitting thereturn of the stock through the slide opening 29. In this manner, theflow of stock through the outlet 12 will be maintained normalautomatically during the operation of the machine and the continuouspumping of the stock into the box 1U through the inlet pipe 40 from thestock chest 42.

What I claim as new is 1. An automatic controlling means for the stu boxof a paper'making machine, comprising in combination with a stul" boxhavmg an outlet in its forward wall, a controlling valve for saidoutlet, partitions within the box forming receiving' and dischargingcompartments therein, an inlet for stock into one of said compartmentsand an outlet from the adjacent compartment, a controlling slide betweenthe said compartments, associated hinged lids for the box operativelyconnected to the said slide adapted Afor opening simultaneously with theopening of the said lids, and operating connections between the lsaidvalve and slide.

2. In combination with a stuff box having an outlet for stock, acontrolling valve for said outlet, an adjusting leverfor said valve, apartition within the box terminating adj acent the top thereof, inletand overiiow pipes for the said stock arranged on opposite sides of thepartition, a slide adapted for controlling the passage of surplus stockover the said partition, a supporting bail connected between the `saidslide and lever, and a hinged cover for the box overlying and attachedto the slide whereby the elevating of the cover is adapted for openingthe slide.

3. In combination with a stu box having an outlet for stock, acontrolling valve for said outlet, an adjusting lever for said valve, apartition within the box terminating ad- `jacent the top-thereof inletand overflow pipes for thesaid stoc arranged on opposite sides of thepartition, a slide adapted y. for controlling the passage of surplusstock \over the said partition, a' supporting bail `connected `betweenthe said slide and lever, a hingedcoVer for the box overlying andattached to the slide whereby the elevatingof the cover .is adapted foropening the slide, a freely swinging rear cover for the box resting uponthe first-mentioned cover, l a balancing' weight adjustably mounted uponthe free end ortion of. the lever, and a manually contro ed openingslide carried by the said partition. l

4. A stuff box for paper making machines having an outlet in one end,relatively low and h1gh partitions arranged within the box,

an inlet for stock communicating with the interior of the box betweenthe said partitions, a return pipe for excess stock leading from the boxrearwardly of the higher partition and of the opposite end of the boxfrom the said outlet, a vertically movable slide having an openingtherethrough and operatively arranged adjacent the said lhlgherpartition adapted for controlling the passing ofV surplus stockrearwardly thereover, a vertically movable valve for the said outletopening, a rocking lever for the said valve, and automatic controllingmeans for .the slide associated with the said lever.

5. A stuff box for paper making machines having an outlet in one end,relatively low and high artitions arranged withimthe box, an inlet orstock communicating with the interior of the box between the saidpartitions, a return pipe for excess stock leading from the boxrearwardly of the higher partition and of the opposite end of the boxfrom the said outlet, a vertically movable slide having an openingtherethrough and operatively arranged adjacent the said higher partitionadapted for controllin the passing of surplus stock rearwardly ereover,a vertically movable valve for the said outlet opening, a rocking leverfor the said valve, a bail connection between the said slide and lever,a hinged cover for said box `resting upon the said slide within the saidbail, a swinging channel plate carried by the slide normally overlyingthe adjacent edge of the cover, and a ret'ainin latch upon the saidcover adapted for resihent seating over the said plate.

6. A stuff box for paper making machines 'I 'and high artitions arrangedwithin the box, an inlet or stock communicating with the interior of thebox between the'said partitions, a return pipe for excess stock leadingfrom the box rearwardly-of the higher partition and of the opposite endof the boxv from the said outlet, a vertically movable slide having anopening therethrough and operatively arranged adjacent the said higherpartition adapted for controlling the passing of surplus stockrearwardly thereover, a vertically movable valve for, the said outletopening, a rocking lever for the said valve, a bail connection betweenthe said slide and lever, a hinged cover for said box resting upon thesaid slide within the said bail, a swinging channel plate carried by theslide normally overlying the adjacent edge 'of the cover, a retaininglatch upon sald cover adapted for resilientseating over the 2o justingweight upon the said lever, and a 25 manually operable opening slide forthe said higler partition.

testimony whereof I ailix my signature.

MIKE JAKAB.

